In addition to the basic characteristics of a capacitor (capacitance and rated voltage), ever more applications demand further diversification of its electrical parameters. The equivalent series resistance (ESR) is a key parameter for many circuits. It describes the internal series resistance of the capacitor and is also the critical parameter for the design of many applications.
On this basis, Epcos has extended its existing SpeedPower range (tantalum capacitors with low ESR values) by two additional new series - the SpeedPower II and III:
* In the SpeedPower II series, Epcos has extended its existing range of case sizes B to E by several gradations in the ESR limits. In the series, tantalum capacitors are additionally being introduced in case size A. The series extension is based on a technology that has been proven for many years with tested and optimised production methods.
* In the SpeedPower III series (lowest ESR values), an optimised anode design with a larger surface area is now used.
The integration of case size A and reduction of the previous ESR limits now allows a selective design-in and a focused response to the application environment. Miniaturisation also leads to cost and space savings. Applications are in the telecoms, automotive electronics, IT, consumer and industrial electronics sectors that are characterised by lowest ESR (max) requirements and/or space-critical applications.
Key benefits of the new series: broad range of low ESR capacitors in case sizes A to E, rated voltage 2,5 to 50 V; broad range of ESR limits: 40 mΩ to 15 Ω avoiding parallel connections thanks to reduced ESR values - increases reliability and reduces placement costs; cost and space saving thanks to miniaturisation.
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